Nasal support
There are significant differences between children's heads and adults, especially the height of the nasal bridge. Most children have lower nasal bridges, so it is best to choose glasses with a high nose support or an adjustable nose support frame for children's glasses. Otherwise, if the frame and nose support are low, the glasses may easily stick to the eyeball, or even touch the eyelashes, causing discomfort to the eyes.
Mirror frame material
The material of the mirror frame is mainly divided into metal frame and plastic sheet frame. Most children are active and have a casual attitude towards the removal and placement of their glasses. Using a metal frame can easily deform and break, and it may cause skin allergies. The plastic frame is not wear-resistant, has poor ductility, is easy to break, and the fracture is serrated, which is not suitable for children to use. The best material is high-quality TR90 or lightweight board series, which is not easy to change and is also difficult to damage, environmentally friendly and safe.
weight
When choosing children's glasses, be sure to pay attention to their weight. Because the weight of the glasses directly affects the nasal bridge, if it is too heavy, it can easily cause bone soreness in the nasal bridge, and in severe cases, it may lead to nasal bone degeneration. So glasses for children usually weigh less than 17 grams, which is the most suitable.
Frame size
Children's glasses should have sufficient visual field. Due to the wide range of children's activities, it is recommended not to choose frames that may produce shadows and blind spots. If the frame is too small, the field of view will decrease; The frame is too large, which can make it unstable to wear and increase its weight. So children's eyeglass frames should be of moderate size.
Lens selection
The optical quality of lenses can affect visual quality, so children should choose lenses with good transmittance when using glasses to avoid worsening myopia caused by inferior lenses. From a safety perspective, children should choose safe and non fragile resin lenses instead of glass lenses to avoid eye injuries caused by broken lenses.
price
Most parents believe that the more expensive the price, the better, and the best for their children. In fact, the refractive index of children's eyes changes relatively quickly, often requiring replacement within six months to a year. From an economic perspective, choosing the right price is more important.